Product Details: NVX VSLR39 39 Ohm Load Resistors (Pair). Designed to generate a load for factory radios that will not work without sensing speakers connected to their outputs. Used in factory systems that mute or cause distortion when replacing OEM speakers. Provides stability and noise filtering for Class D amplified OEM sound systems. Ideal for all vehicles 2005-2015. Equivalent to AudioControl AC-LGD. Sold as a pair. 1-year Manufacturer's Warranty.